Ethyl 3-methyl-1-(4-methylbenzyl)-6-oxo-6,7-dihydro-1h-pyrazolo[3,4-b]pyridine-4-carboxylate CAS 1174860-77-5
| CAS No. | 1174860-77-5 |
| Molecular Formula | C18H19N3O3 |
| Molecular Weight | 325.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Ethyl 3-methyl-1-(4-methylbenzyl)-6-oxo-6,7-dihydro-1h-pyrazolo[3,4-b]pyridine-4-carboxylate (CAS 1174860-77-5) is a high-purity analytical reference standard with the molecular formula C18H19N3O3 and a molecular weight of 325.36 g/mol.
Structurally, Ethyl 3-methyl-1-(4-methylbenzyl)-6-oxo-6,7-dihydro-1h-pyrazolo[3,4-b]pyridine-4-carboxylate (C18H19N3O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 325.36 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Ethyl 3-methyl-1-(4-methylbenzyl)-6-oxo-6,7-dihydro-1h-pyrazolo[3,4-b]pyridine-4-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C18H19N3O3 |
| Molecular Weight | 325.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 3 |
Recommended Standards
- 3-((1-(Tert-butoxycarbonyl)piperidin-4-yl)oxy)-1-methyl-1H-pyrazole-5-carboxylic acid (CAS 1169563-43-2)
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- 2-((Tert-butoxycarbonyl)amino)-3-(3,4-dimethoxyphenyl)propanoic acid (CAS 1162696-83-4)
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